Beeoee



(No Model.)

M. 'SOHWEMBERGER 8a A. GROBSO'HEL. BUNG.

Patented Mar. 5, 1889.

iJNLTTED STATES PATENT @EETbE.

MA'VllllAb SCIPWEMBERGER AND ANTON GROESCHEL, OF (INC lNNi Yll, OHIO, AHSIG NORS OF ONE-THIRD TO L. i l. BUURMAN OF SAME Iu\(lli:-

BUNG..

SPECIFICATION forming part of Letters Patent No. 399,086, dated March 5, 1889.

Application filed December 22, 1888. Serial No. 294,434. (No model.) 7

having a valved vent-passage therethrough, and in the details of construction hereinafter '1 pointed out.

In the drawings, Figure 1 is a vertical section of our improved bung. Fig. 2 is an elevation o i the same shown in position ina package.

A rep reson ts the wall of a cask or other package; .8, the ordinary bushing fora bung-hole; (,the bod y-piece of the bung-frame, having a flange, e, and a downwardly-extending screwthreaded projection, 0, adapted to take through an annular disk, D, of wood or other suitable material, which serves as the bearing-face of the bung.

*1 is a nut adapted to take over the screw thread ed projection I" and serving to support the disk l) and clamp it against the flange thereby .re-(mtorcing the disk and tending to prevent breakage or warping. \Vhen the disk is worn or otherwise injured, it may be readily removed and a new one inserted, thus enabling the other and more expensive parts to be used indefinitely.

The body-piece is provided with a suitable vent-passage, c", of sutficientsize at some con venient point to receive a downwardly-opening valve, 1 which permits the ingress of air when the internal pressure isless than that of the atmosphere, and prevents the escape of the gases within when the internal pre. sure is greater than that of the atmosphere. This valve may be of rubber, and we have illustrated it as carried by a tubular projection, f, adapted. to take into the vent-passage and press against the inner wall thereof, thereby holding the valve in position. An advantage of this construction is that the valve may be readily removed and replaced by a new one when it becomes worn.

The body-piece is shown as provided at its upper extremity with a flanged head, 0, for convenience in withdrawing the bung from its seat.

'1. A bung consistingtfi' aflangedbody-piece having a screw threaded projection taking through a disk, which forms the bearing-surface of the hung, a clamping-piece adjustable on such projection, a vent-passage through the bung, and a valve therein, sulgistantially as and for the purpose specified.

2. A bung consisting of a flanged body-piece having a screw-tln'emled. projection taking through a disk, which forms the bearing-surface of the bung, aclamping-piece adjustable on said projection, a ventpassage through the bung, and a valve therein carried by a removable projection taking into said vent-passage, substantially as and for the purpose described.

3. A bung consisting of a bod ypiece, 0, disk 1), projection 0, taking through said disk, ventpas age (3 autonlatic downwardlyopening valve F, and removable projection f, substantially as and for the purposes specified.

MATTHIAS SCHW'EH BERGER. ANTON GROESCHEL.

'itnesses:

JAMES RAMSEY, FRANK O. LOVELAXD. 

